Document Type and Number:
Japanese Patent JPS4722847
Kind Code:
U
Application Number:
JP2018571U
Publication Date:
November 14, 1972
Filing Date:
March 22, 1971
Export Citation:
International Classes:
H01J31/15; H01J29/02; (IPC1-7): H01J29/02
Domestic Patent References:
JPS4944508U | 1974-04-19 |